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https://www.readbyqxmd.com/read/28350858/in-vivo-measured-joint-friction-in-hip-implants-during-walking-after-a-short-rest
#1
Philipp Damm, Alwina Bender, Georg Duda, Georg Bergmann
INTRODUCTION: It has been suspected that friction in hip implants is higher when walking is initiated after a resting period than during continuous movement. It cannot be excluded that such increased initial moments endanger the cup fixation in the acetabulum, overstress the taper connections in the implant or increase wear. To assess these risks, the contact forces, friction moments and friction coefficients in the joint were measured in vivo in ten subjects. Instrumented hip joint implants with telemetric data transmission were used to access the contact loads between the cup and head during the first steps of walking after a short rest...
2017: PloS One
https://www.readbyqxmd.com/read/28350716/movement-strategies-among-groups-of-chronic-ankle-instability-coper-and-control
#2
S Jun Son, Hyunsoo Kim, Mattew K Seeley, J Ty Hopkins
INTRODUCTION: Comprehensive evaluation of movement strategies during functional movement is a difficult undertaking. Because of this challenge, studied movements have been over simplified. Furthermore, evaluating movement strategies at only a discrete time point(s) provide limited insight into how movement strategies may change or adapt in chronic ankle instability (CAI) patients. This study aimed to identify abnormal movement strategies in individuals with a history of ankle sprain injury during a sports maneuver compared to healthy controls...
March 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28350577/reliability-of-heart-rate-as-neuroadrenergic-marker-in-the-metabolic-syndrome
#3
Fosca Quarti Trevano, Gino Seravalle, Mario Macchiarulo, Paolo Villa, Carlo Valena, Raffaella Dell'Oro, Giuseppe Mancia, Guido Grassi
BACKGROUND: Metabolic syndrome is characterized by a pronounced sympathetic overactivity as documented by the marked increase in muscle sympathetic nerve traffic (MSNA) as well as in plasma norepinephrine values reported in this condition. Whether and to what extent heart rate (HR) reflects the abovementioned adrenergic alterations in metabolic syndrome remains largely undefined. It is also undefined the validity of the abovementioned adrenergic markers in reflecting the main features of the metabolic syndrome...
March 27, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28350548/pelvic-discontinuity-associated-with-total-hip-arthroplasty-evaluation-and-management
#4
Matthew P Abdel, Robert T Trousdale, Daniel J Berry
Pelvic discontinuity is a challenging complication encountered during revision total hip arthroplasty. Pelvic discontinuity is defined as a separation of the ilium superiorly from the ischiopubic segment inferiorly and is typically a chronic condition in failed total hip arthroplasties in the setting of bone loss. After a history and a physical examination have been completed and infection has been ruled out, appropriate imaging must be obtained, including plain hip radiographs, oblique Judet radiographs, and often a CT scan...
March 27, 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28346858/circulating-soluble-il-6-receptor-concentration-and-visceral-adipocyte-size-are-related-to-insulin-resistance-in-taiwanese-adults-with-morbid-obesity
#5
Feng-Chih Kuo, Ya-Hsien Huang, Fu-Huang Lin, Yi-Jen Hung, Chang-Hsun Hsieh, Chieh-Hua Lu, Sheng-Chiang Su, Chia-Luen Huang, Chien-Hsing Lee, Nain-Feng Chu
BACKGROUND: Morbid obesity is related to chronic inflammation and many metabolic complications. Interleukin (IL)-6 plays a pivotal pathophysiological role in obesity, and IL-6 trans-signaling through the soluble IL-6 receptor (sIL-6R) has a major proinflammatory effect. The aim of this study was to investigate the association between sIL-6R, adipocyte size, and insulin resistance in morbidly obese individuals. METHODS: We measured concentrations of sIL-6R, high-sensitivity C-reactive protein, and lipid parameters and estimated homeostasis model assessment of insulin resistance (HOMA-IR) before the patients underwent bariatric surgery...
March 27, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28346833/arthroscopic-hip-surgery-in-the-elite-athlete-comparison-of-female-and-male-competitive-athletes
#6
Kotaro R Shibata, Shuichi Matsuda, Marc R Safran
BACKGROUND: Few studies have published the results of hip arthroscopic surgery in elite athletes and none studying a significant number of elite female athletes. PURPOSE: (1) To compare sex-based differences in the ability to return to prior competitive sports activity after arthroscopic hip surgery. (2) To compare sex-based differences in the type of sports activity, diagnosis, and treatment in athletes requiring hip arthroscopic surgery. STUDY DESIGN: Cohort study; Level of evidence, 3...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28346568/impact-of-3-monthly-vitamin-d-supplementation-plus-exercise-on-survival-after-surgery-for-osteoporotic-hip-fracture-in-adult-patients-over-50-years-a-pragmatic-randomized-partially-blinded-controlled-trial
#7
A Laiz, J Malouf, A Marin, V Longobardi, J de Caso, J Farrerons, J Casademont
OBJECTIVE: To determine whether 3-monthly supplementation of an oral vitamin D widely used in Spain (calcifediol) plus daily exercise could influence survival at one and four years after surgery for osteoporotic hip fracture. DESIGN: A pragmatic, randomized, partially single-blind placebo-controlled study. SETTING: Patients admitted to a tertiary university hospital for acute hip fracture. PARTICIPANTS: 675 healthy adult patients undergoing surgery for osteoporotic hip fracture were recruited from January 2004 to December 2007...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28346358/genomic-evidence-for-bacterial-determinants-influencing-obesity-development
#8
Raphael D Isokpehi, Shaneka S Simmons, Matilda O Johnson, Marinelle Payton
Obesity is a major global public health problem requiring multifaceted interventional approaches including dietary interventions with probiotic bacteria. High-throughput genome sequencing of microbial communities in the mammalian gastrointestinal system continues to present diverse protein function information to understand the bacterial determinants that influence obesity development. The goal of the research reported in this article was to identify biological processes in probiotic bacteria that could influence the mechanisms for the extraction of energy from diet in the human gastrointestinal system...
March 26, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28346309/sacral-insufficiency-fracture-in-an-elderly-woman-with-hip-pain
#9
Chia-Ying Lin, Ming-Tsung Chuang, Yin-I Chiu
No abstract text is available yet for this article.
March 24, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28345781/apoptotic-pathways-of-macrophages-within-osteolytic-interface-membrane-in-periprosthestic-osteolysis-after-total-hip-replacement
#10
Guoyin Liu, Ting Guo, Yong Zhang, Naicheng Liu, Jiangning Chen, Jianmin Chen, Junfeng Zhang, Jianning Zhao
Macrophage apoptosis in interface membrane, which occurs through either death receptor, mitochondrion, or endoplasmic reticulum (ER) stress pathways, has been suggested to play an important role in promoting osteolysis. However, how and why macrophage apoptosis originates and the correlation among these apoptotic pathways is not yet clear. The objective of this study was to identify the apoptotic mechanism of macrophages, and to explore the relationship between the apoptotic pathways and progression of osteolysis...
March 27, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28345441/prevalence-and-cost-of-subsequent-fractures-among-u-s-patients-with-an-incident-fracture
#11
Jessica Weaver, Shiva Sajjan, E Michael Lewiecki, Steven T Harris, Panagiotis Marvos
BACKGROUND: The prevalence and cost of subsequent fractures among patients with an incident fracture are not well defined. OBJECTIVE: To assess the prevalence of, and costs associated with, subsequent fractures in the year after an incident fracture. METHODS: This was a retrospective claims database analysis using data from Humana Medicare Advantage claims (Medicare group) and Optum Insight Clinformatics Data Mart commercial claims (commercial group)...
April 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28345359/a-new-equation-based-on-the-6-min-walking-test-to-predict-vo2peak-in-women-with-obesity
#12
Lore Metz, David Thivel, Bruno Peirrera, Ruddy Richard, Valérie Julian, Martine Duclos
OBJECTIVE: The 6-min walking test (6 MWT) is commonly used to assess obese patients' aerobic fitness, but it has rarely been compared with a direct measurement of maximal aerobic capacities (VO2max or VO2peak) in obese adults. The aim of this study was to investigate the relationship between the distance covered during a 6 MWT with objectively measured VO2peak and to propose a new equation to predict VO2peak from this walking test in obese patients. METHODS: One hundred and thirty-seven obese patients (45...
March 27, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28345356/dysregulation-of-tissue-factor-thrombin-activatable-fibrinolysis-inhibitor-and-fibrinogen-in-patients-undergoing-total-joint-arthroplasty
#13
Christopher Wanderling, Jeffrey Liles, Elissa Finkler, Peter Carlsgaard, William Hopkinson, Nil Guler, Debra Hoppensteadt, Jawed Fareed
Total joint arthroplasty (TJA) of the hip or knee (THA, TKA) has become an increasingly common procedure. While TJA is a successful treatment for individuals experiencing degenerative joint diseases, it is well known that one of the most common perioperative complications of TJA is deep venous thrombosis (DVT). To profile tissue factor (TF), microparticle-tissue factor (MP-TF), thrombin-activatable fibrinolysis inhibitor (TAFI), and fibrinogen levels in patients undergoing TJA to determine potential preexisting Hemostatic dysregulation...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28345159/stereoselective-catalytic-synthesis-of-active-pharmaceutical-ingredients-in-homemade-3d-printed-mesoreactors
#14
Sergio Rossi, Riccardo Porta, Davide Brenna, Alessandra Puglisi, Maurizio Benaglia
3D-printed flow reactors were designed, fabricated from different materials (PLA, HIPS, nylon), and used for a catalytic stereoselective Henry reaction. The use of readily prepared and tunable 3D-printed reactors enabled the rapid screening of devices with different sizes, shapes, and channel dimensions, aimed at the identification of the best-performing reactor setup. The optimized process afforded the products in high yields, moderate diastereoselectivity, and up to 90 % ee. The method was applied to the continuous-flow synthesis of biologically active chiral 1,2-amino alcohols (norephedrine, metaraminol, and methoxamine) through a two-step sequence combining the nitroaldol reaction with a hydrogenation...
March 27, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28344836/human-body-mechanics-of-pushing-and-pulling-analyzing-the-factors-of-task-related-strain-on-the-musculoskeletal-system
#15
REVIEW
Andreas Argubi-Wollesen, Bettina Wollesen, Martin Leitner, Klaus Mattes
The purpose of this review is to name and describe the important factors of musculoskeletal strain originating from pushing and pulling tasks such as cart handling that are commonly found in industrial contexts. A literature database search was performed using the research platform Web of Science. For a study to be included in this review differences in measured or calculated strain had to be investigated with regard to: (1) cart weight/ load; (2) handle position and design; (3) exerted forces; (4) handling task (push and pull); or (5) task experience...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28344736/recovery-of-hip-and-back-muscle-fatigue-following-a-back-extension-endurance-test
#16
Sharon Wang-Price, Mohammad Almadan, Carissa Stoddard, Dustin Moore
Literature has not shown the minimum time required to recover from muscle fatigue after a prolonged trunk isometric contraction. The purpose of this study was to determine if the lumbar multifidus (LM) and gluteus maximus (GM) muscles would recover from fatigue after three different rest periods following performance of a back extension endurance test. Endurance time and electromyographic (EMG) activity of bilateral LM and GM muscles were collected from 12 healthy adults during a modified Biering-Sørensen test...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28343870/cd15-focus-score-infection-diagnosis-and-stratification-into-low-virulence-and-high-virulence-microbial-pathogens-in-periprosthetic-joint-infection
#17
V T Krenn, M Liebisch, B Kölbel, N Renz, T Gehrke, M Huber, M G Krukemeyer, A Trampuz, H Resch, V Krenn
INTRODUCTION: The aim of the work was to validate the CD15 focus score for the infection pathology of periprosthetic joint infection in a large group and to clarify whether a stratification into low-virulence and high-virulence microbial pathogens is possible by means of the CD15 focus score (quantification of CD15 positive granulocytes). METHODS: The histopathology of 275 synovial tissue samples taken intraoperatively during revision operations (n=127 hip, n=141 knee, n=2 shoulder, n=5 ankle) was evaluated according to the SLIM consensus classification (SLIM=synovial-like interface membrane)...
January 12, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28343831/stepping-toward-objective-outcomes-a-prospective-analysis-of-step-count-after-total-joint-arthroplasty
#18
Meredith P Crizer, Gregory S Kazarian, Andrew N Fleischman, Jess H Lonner, Mitchell G Maltenfort, Antonia F Chen
BACKGROUND: Functional recovery monitoring after total hip arthroplasty (THA) and total knee arthroplasty (TKA) is often limited to surgeon-based assessment and patient self-reporting rather than objective measures. However, traditional outcomes may not reliably gauge return of function. The goal of this study was to evaluate and compare an objective measure of postoperative recovery, daily step-count, with patient self-reported outcomes. METHODS: Prospectively, 589 patients used a mobile step-tracking application to record daily steps...
March 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28343830/fall-risk-score-at-the-time-of-discharge-predicts-readmission-following-total-joint-arthroplasty
#19
Bheeshma Ravi, Zhang Nan, Adam J Schwartz, Henry D Clarke
BACKGROUND: Readmission among Medicare recipients is a leading driver of healthcare expenditure. To date, most predictive tools are too coarse for direct clinical application. Our objective in this study is to determine if a pre-existing tool to identify patients at increased risk for inpatient falls, the Hendrich Fall Risk Score, could be used to accurately identify Medicare patients at increased risk for readmission following arthroplasty, regardless of whether the readmission was due to a fall...
February 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28343829/corrigendum-to-metal-on-metal-or-ceramic-on-ceramic-for-cementless-total-hip-arthroplasty-a-meta-analysis-the-journal-of-arthroplasty-31-2016-2637-2645
#20
Young-Kyun Lee, Byung-Ho Yoon, Yun Seong Choi, Woo-Lam Jo, Yong-Chan Ha, Kyung-Hoi Koo
No abstract text is available yet for this article.
March 23, 2017: Journal of Arthroplasty
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